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| Database - Interview Questions and Answers for 'Informatica' - 3 question(s) found - Order By Newest | ||||
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| Ans. ACID stands for Atomicity, Consistency, Isolation, Durability is a set of properties of database transactions. Atomicity means all or nothing. i.e parts of a transaction shouldn't commit if any one of them fails. Either the whole transaction should succeed or it should be complete rollback. Consistency means that any transaction should lead database from one stabe state to another. Isolation means that the execution of transaction results in a system state that would be obtained if transactions were executed serially. Durability means that when a transaction is committed it forms the permanent state of database. | ||||
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 Discuss Correct / Improve  database acid  Asked in 7 Companies  Intermediate | ||||
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| Ans. Stored procedures are a batch of SQL statements along with programming constructs ( if else, loops etc ) and stored as a single program that can be called by different clients and hence reused. | ||||
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Discuss Correct / Improve database stored procedure Asked in 2 Companies basic  frequent | ||||
| Related Questions | ||||
| What is ACID ? | ||||
| What is database deadlock ? How can we avoid them? | ||||
| What things you would care about to improve the performance of Application if its identified that its DB communication that needs to be improved ? | ||||
| If you are given a choice to implement the code to either Insert a Record or Update if already exist, Which approach will you follow ? | ||||
| What is the use of @GeneratedValue annotation in Hibernate? | ||||
| What are temp tables ? | ||||
| What is a Database Trigger ? | ||||
| What is database Normalization ? | ||||
| What happens to backups if we delete the RDS instance ? | ||||
| What is a Cursor ? | ||||
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| Ans. Oracle having following types of joins these are also called 8i joins. There are: 1. Equi (or) Inner join 2. Non Equi join 3.Self join 4.Outer join Oracle also support the 9i (or) ANSI standard joins.There are: 1.Inner join 2.Left outer join 3.Right outer join 4.Full outer join 5.Natural join | ||||
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| Discuss Correct / Improve sql joins sql Asked in 2 Companies | ||||
| Related Questions | ||||
| If Table A has 100 records and Table B has 50 records , how many records will the left join of Table A with Table B generate ? | ||||
| If Table A has 100 records and Table B has 50 records , how many records will the right join of Table A with Table B generate ? | ||||
| If Table A has 0 records and Table B has 50 records , how many records will the equi join of Table generate ? | ||||
